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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of unrealized gain before deducting unrealized loss on investments in debt securities classified as available-for-sale securities.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Nominal or face amount used to calculate payments on the derivative asset.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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Note 6 - Financial Instruments and Fair Value (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2011	Mar. 31, 2015
Note 6 - Financial Instruments and Fair Value (Details) [Line Items]
Asset Impairment Charges		$ 1,000,000us-gaap_AssetImpairmentCharges
Available-for-sale Debt Securities Gross Unrealized Gain	427,000
Interest Rate Cash Flow Hedge Liability at Fair Value			117,000
Cash Flow Hedging [Member] \| Interest Rate Swap [Member]
Note 6 - Financial Instruments and Fair Value (Details) [Line Items]
Derivative Asset, Notional Amount			20,400,000
Auction Rate Securities [Member]
Note 6 - Financial Instruments and Fair Value (Details) [Line Items]
Available-for-sale Securities	6,905,000		6,905,000
Available-for-sale Securities, Amortized Cost Basis	$ 7,425,000		$ 7,425,000
Derivative, Basis Spread on Variable Rate			2.25%